package Collection;

import java.util.*;

public class SortInteger {
    public static void main(String[] args) {
        Random rand = new Random();
        List<Integer>list=new ArrayList<>();
        for (int i=0;i<10;i++){
            list.add(rand.nextInt(100));
        }
        System.out.println("list原始数据："+list); //无序

        Collections.sort(list); //自然排序（小到大）
        System.out.println("list排序后数据："+list);
        System.out.println("第1个元素为："+ list.get(0));

        Collections.reverse(list);
        System.out.println("list反转后数据："+list);
        System.out.println("第1个元素为："+ list.get(0));
    }
}
